Type writing machine



4 Sheets-Sheet 1.

(No Model.)

G. W. N. YOST. l TYPE WRITING MACHINE. 110.452,421. Patented May 19,1891.

(No Model.) 4 Sheets-Sheet 2.

G. W. N. YOST.

TYPE WRITING MAGHINB.

110.452,421. Patented May 19,1891. A

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4 Sheets Sheet 3.

(No Model.) I e. 111.111. YosT.

TYPE WRITING MACHINE.

110. 452,421. Patented May 19, 1891.

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(No Model.) 4 sheets-sheet 4.

G. W. N. YOST. lTIPI?. WRITING MACHINE.

No. 452,421. Patented May 19, 1891.

UNITED STATES PATENT OFFICE.

GEORGE W. N. YOST, OF-NEV YORK, N. Y., ASSIGNOR TO THE YOST 7RITING MACT-HNE COMPANY, OF SAME PLACE.

TYPE-WRITING MACHINE SPECIFICATION forming part of Letters Patent No. 452,421, dated May 19, 1891.

' Applicationfiledoaoberis,1889. serial No. 327,423. (remodel.)

To all whom t may concern.' 9. The stand 7 is made hollow or tubular Be it known that I, GEORGE XV. N. YOST, a cent1-all y and is threaded eXteriorly at its up-' citizen of the United States, and a resident of per end to receive a nut 12, which operates New York, in the county of New York and to clamp the fulcrum-ring Sand the sub-le- 5 State of New York, have invented cert-ain ver guide-ring 11 firmly upon the stand or 55 new and useful Improvementsin Type-Vritsupport. The lifting sub-levers radiate ing Machines, of which theA following is a from their fulcrum-ring 9 to points directly specification. over and slightly beyond the lifters G, and

My invention has for its main objects the are preferably formed with heads or enlargexo product-ion of a simple, cheap, and effective ments. 6o

type-writing machine of the kindv known as 13 designates a shift-wheel or circular plate shift-machines; andv it consists in the feamounted centrally-upon ashoulder 14, formed tures of construction and combinations of deon the stand or support 7 and held in place vices hereinafter more fully described, and by a bolt or screw 15 and a nut 10. The

I5 particularl7 pointed out in the appended shift-wheel is provided with perforations 17, 65 claims. which are arranged in a circle near its perim- In the accompanying drawings, Figure lis eter. Through these perforations or opena plan view of a type-writing machine emings pass the lower ends of the vertical conbodying my improvements. Fig. 2 is a cennecting-rods 1S, which actuate the type-car- 2o tral vertical section of the same. Fig. 3 is a riers 19. Vith each type-carrier is associ- 7o horizontal section on the line on .fr of Fig. 2. ated a connecting-rod. The type-carriers are Fig. 4. is a similar section on the line y y of arranged in a circle, likewise the connecting- Fig. 2. Fig. 5 is a detail perspective view rods. illustrating the shifting mechanism. Fig. 6 In the machine illustrated in all the views is a detail plan of the shift-ring and the retainexcepting Fig. 9 there are seventy-eight type- 7 5 ing and returning devices. Fig. 7 is a similar carriers, seventy-eight connecting-rods, twenview with the parts in a shifted position. 'ty-six sub-levers, and twenty-six key-levers. Fig. S is a central verticalA section showing The connecting-rods are arranged in groups the invention embodied in a machine of someor periods of three-that is to say, three conwhat dierent construction as to the typemeeting-rods and type-carriers are controlled 8o movement. Fig. 9 represents in perspective by one key-lever and one sub-lever. Each a modification of lmy invention. Fig. 10 is an sub-lever stands normally beneath the midenlarged detail view of the central stand. or dle eonnecting-rodof each group with the exsupport, dro. tremity of said connecting-rod terminating 3 5 In the several views the same part will be close to or immediately above it. The shift- 8: found designated by the same numeral of ring is designed to be oscillated to vibrate or reference. swing the lower ends of the pendent connect- 2 represents thebed-plate; 3, the key-leing-rods, so that the first and third of each vers; et, the key-lever fulcrum-posts, and 5 group may be brought in line or register with 4o the finger-keys. The rear end of each keythe radiating sub or lifting levers 10. There 9o lever is provided with a stem or lifter 6, which are provided two shift-keys, one for moving is preferablyy jointed thereto, and which, exthe 'shift-ring and the lower ends of the series tending above the base-plate, terminates in a of connecting-rods to the left (orin the direchead 0r enlargement. tion of the hands of a clock) andthe other for 4 5 Mounted upon the bed-plate is a stand or shifting these devices to the right of their 95 support. 7, formed with a circular shoulder 8 normal positions.

for supporting the bearing or fulcrum ring 9 20 designates the shift-key for moving the of the lifting or sub-levers 10, and for also shift-ring and the lower ends of the connectsupporting the sub leverguide-ring11,which ing-rods to the left. This keyor finger-piece o is placed on top of the sub-lever fnlcrum-ring is connected to a lever 21, to which is attached roo a link 22, whose upper end is connected to one end of a bell-crank or bent lever 23. A rod 21 is connected at one end to the inner end of the bell-crank and at its other end to an arm 25, projecting forwardly from the shift-ring. The key for moving the shift-ring and the lower ends of the connecting-rods to the right is designated by the numeral 2G, and is connected to a lever 27, provided with alink 28, extending up through thebed-plate, like the link 22. To the upper end of the link 28 is attached one arm of a bell-crank 29, Whose opposite arm is pivoted-to one end of a rod 30, which at its other end is connected to the arm 25 of the shift-ring. The rear portion of the shift ring or plate is formed with a V-shaped notch 3l, providing inclined walls or cams 32 and Into this notch or recess plays the free end of a lever 34, provided with an anti-friction roller 35. A spring 36, attached at one end to a post37, affixed to the bed-plate, and at its other end to the lever 34, is provided to keep said lever in operative engagement with the shift-wheel and to return the same and its connections to their normal positions after actuation of eithershift-key.

Preferably the connecting-rods are all provided with inwardly-projecting lugs or iingers 38, for supporting and operating the circular universal bar 39. The hub or center of the'universal bar or ring is provided with a conical depression, into which is stepped the lower conical end of a vertical spindle i0, which slides in a bearing formed in an arm or'extension 41 of the stand or support 7. Through a slot in `this spindle passes a horizontally-arran ged lever 2,which is fulcrumed on a post 43, rising from the bed-plate. The frontend of this lever rests upon or is connected to the upper end of a vertical rod eti, which is connected at its lower end beneath the bed-plate to the space-key lever 45, having asuitable key or tinger-piecefas 46. The rear end ofthe lever Ai2 is connected by a link Li7 to a rocker-arm i8, projecting rearwardly from an oscillatory holder or trunnion, which carries the feed-dogs -19 for the paper-carriage. The trunnion or dog-holder is supported by an arm or bracket 50, and the dogs are adapted to co-operate with the duplex rack 5l, attached to the paper-carriage, in a manner to effect a step-by-step feed of the carriage under the influence of, its driving mechanism, which is here represented as consisting of a spring-drum 52 and a cord or chain 53, attached at one end to the springdrum and at the other to the right-hand end of the paper-carriage. Pulleys 54 are provided for giving the proper direction to the cord or flexible connection 53. The papercarriage is adapted to travel on ways or supports 55 5G, and is provided with a platen 57, a feed-roller 58, a paper-table 59, and paperguides GO, all in about the usual. manner.

The machine shown at Figs. 1 and 2 is adapted to print directly from an inkiug pad or ring Gl, while that illustrated at Fig. 8 is designed to print through the customaryinking ribbon or band.

In printing from a pad, jointed type-carriers are employed, as shown at Figs. 1 and 2, while in printing through a ribbon simple or plain bars provided with type are used, as seen at Fig. 8. The dotted lines at Fig. 2 show the action of the jointed typecarrier when moving the type-face from the inking-pad to the printing-point. The dotted line at Fig. 8 shows the path of the type-face of the unjointed or rigid type bar or lever in moving to the impressionpoint to print through the usual ribbon. (Not shown.) In the use of either form of type-carrier the type is moved tothe impression-point (or the paper on the platen) by an upward push or movement of its associated connecting-rod 18.

The type-movement, (exclusive of the connecting-rods, the paper-earriage,the escapement-feed, the universal bar, &c.,) however, forms no part of my present invention.

The middle connecting-rod of each group is preferably attached to a lower-case typecarrier. The right-hand connecting-redet each group is connected to an upper-case typecarrier and the left-hand connecting-rod of each group to a type-carrier bearing a numeral, punctuation mark, or sign. In the normal position of the shift-ring the middle or second connecting-rod of each group is adapted to be lifted to move a lower-case type to the printing -point Then the ring is shifted to the left and held, the right-hand or third connecting-rod of each group is adapted to be lifted. to move an upper-case or capital letterl to the printing-point. Then the ring is shifted to the right and held, the left-hand or rstconnecting-rod of each group is adapted to be actuated to move a numeral orpunctuation-mark or sign to the impression-point. The three connecting-rods of each group are operated by one key-lever and its associated lifting or sub lever. In writing with lowerease letters theshift-rin g remains in its normal position. lf it be desiied to print an uppercase letter, the finger-key 2O is depressed, thus forcing down the lever 21 and link 22 and oscillating the shift ring to the left slightly through the intermediate bell-crank 23 and `rod or pitman 24:. As the shift-ring is turned in this direction the lower ends of all the connecting-rods 18 areshifted or moved in the same direction sufficient to bring the pendent end of the right-hand or third connecting-rod of each group over or in line with the lifting-lever 10, which controls it. In this position of the shift-ring and connecting-rods an upper-ease letter maybe printed. If now any of the finger-keys 5 be depressed, the keylever 3 will be actuated and the stem 6 elevated. As the stem G rises, the lifting-levcr 10 is raised at its outer end, and the connecting-rod 18 is forced up to drive or throw the typeoarrier to the pla-ten. If it be desired to print a numeral, punctuation mark, or

ICO

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' finger-keys 5 be operated the key-lever 3, the

stem 6, the lifting-lever 10, and the connecting-rod 1S will be actuated as before, and a type-carrier bearing a numeral or other sign will be driven or moved to the paper-platen. In order to have the lifting-levers when at rest occupyat all times their proper positions and in order to prevent any lateral movement of these levers when in action, the slotted guide-ring ll is provided. The springactuated lever or arm 34 presses toward the axis of the shift-ring and serves to hold the latter firmly in position when the lower-case letters are being operated. When the shiftkey 2O is actuated, the inclined wall 32 forces out a slight distance the free end of the lever 34, as shown by the dotted lines at Fig. 6, and when the shift-key26 is operated the inclined wall 33 similarly affects said lever, as indicated in full lines at Fig. 7. The movement of the lever 34 being effected against the tension or stress of the spring 36, said spring will consequently return the lever, the shift-ring, the connecting-rods, and the devices intermediate the shift-ring and the shift-key as soon as the pressure or force upon the latter is removed.

Preferably each lifting-lever l0 is provided with a small spring, as 62, to insure its return after having been vibrated. This spring is inserted in a housing 63, formed in an annulus 64 in the guide-ring 1l, and bears upon said lever near its fulerum end, the annulus being slotted radially for the passage or aocommodation and guidance of the liftinglever.

The material difference in construction between the machine shown at Fig. 8 and that shown at Fig. l is in the form of the typemovement. The operation of the two machines so far the shifting mechanism is `concerned issubstantially the-same.

In the modification shown at Fig. 9 I have shown my invention adapted to a single-shift machine, or one in which the shift-ring and pendent ends of the connecting-rods move only to one side of the normal position and return. Referring to this ligure, it willbe seen that the connectingrods are arranged in groups or pairs of two. In a machine of this construction there must be provided half as many lifting-levers and key-levers and finger-keys-as there are connecting-rods and type-carriers--that is to say, if there are seventy-eight type-carriers there must be seventy-eight connecting-rods, thirty-nine lifting or sub levers, thirtynine key levers, and thirty-nine finger-keys.

Aswill be seen, the devices for shifting the lower ends of the connecting-rods are constructed and operated substantially like the devices employed in the double shift machine. In lieu of the holding and returning lever 34,. however, I may employ a spiral spring 65, fastened at one end to a xed arm or post 66 and at the other end to a slotted plate 67, adjustable by a set-screw 68 upon the shift-ring. The universal bar 3'9 is adapted to be lifted by any of the connecting-rods, as illustrated by the dotted lines at Fig. 2, to lift the spindle 40 and the lever 42, and thus actuate the feed-dogs to allow the carriage to be moved toward the left one notch at a time under the influence of its spring propelling or driving mechanism. That portion of the universal bar or ring opposite the portion being lifted bears upon its supporting-finger 38 and causes it to act as a fulcrum for the universal bar during the lifting of the connecting-rod and the movement of the type-carrier to the platen. When it is desired to space between words, &c., the space-key is operated to lift the link 44 and the lever 45 to vibrate the feed-dogs without actuating the liftinglevers, the shift-ring, the connecting-rods, the universal bar, or the type-carriers.

I/Vhat I claim as new, and desire to secure by Letters Patent, is-

l. In a type-writing machine, the combination, with a series of type-carriers, of a series of pendent connecting-rods, a ring or plate for shifting the free ends of said connectingrods, a series of key-levers, and a series of lifting-levers arranged between the key-le-' vers and the connecting-rods, substantially as set forth.

2. In a type-writing machine, the combination, with a series of type-carriers, of aseries of pendent connecting-rods, a ring or plate for shifting the free ends of said connectingrods, a series of key-levers, each provided at its rear end with a stem or lifter, and a series of lifting-levers, substantially as set forth.

3. In a type-writing machine, the combination, with a series of type-carriers, of a series of pendent connecting-rods, a ring or plate for shifting the free ends of said connectingrods, means,`substantially as described, for moving said ring or plate, and with it the free ends of said connecting-rods, a series of lifting-levers, and a series of key-levers, substantially as described.

4. vIn a type-writing machine, the combination, with a series of type-carriers, of a series of pendent connecting-rods, a ring or plate for shifting the free ends of said connectingrods, a shift-key, a key-lever, a stem, a bellcrank, and a pit-man, substantially as described.

5. In a type-writing machine, the combination, with a series of type-carriers, of a series of pendent connecting-rods, a ring or plate for shifting the free ends of said connecting- IOO rods, and a springaetuated lever for holding the ring or plate in its normal position, pivoted independently of the ring or plate, and pressing toward the axis of rotation thereof, substantially as described.

6. In atype-Writing machine, the combination, with a series of type-carriers, of a series of pendent connecting-rods, a shift ring or plate having a notch or recess, and a springaetuated lever for returning said ring or plate to its normal position, pivoted independently of the ring or plate, and pressing toward the axis of rotation thereof, substantially as described.

7. In a type-Writing machine, the combination, with a series of type-carriers, of a series of pendent connecting-rods the same in number as the type-carriers, a shift ring or plate, a series of lifting-levers less in number than the connecting-rods and type-carriers, and a series of key-levers the same in number as the lifting-levers, substantially as described.

S. In a type-writing machine, the combination, with a series of type-carriers and a series of pendent eonnectingrods alike in number, of a shift ring or plate, a series of lifting-levers arranged so that each one controls three connecting-rods and type-carriers, and means, substantially as described, for actuating said lifting-levers, substantially as set forth.

9. In a type-writing machine, the combination, with a series of type-carriers and a series of pendent connecting-rodsarran ged in groups of three, of a shift ring or plate, a series of lifting-levers arranged to normally operate the middle connecting-rod of each group, and means, substantially as described, for moving the shift ring or plate to bring either the first or the last connecting-rod of each group to a position to be operated upon by said liftinglevers, substantially as described.

lO. In a type-writing machin e, the eombination, with a series of type-carriers and a series of pendent connecting-rods, of a shift ring or plate, a series of radiating lifting-levers adapted to control two or more of said conneeting-rods and type-carriers, and a series of key-levers adapted to aetuate said lifting-levers, substantially as set forth.

1l. In a type-Writing machine, the combination, with a series of type-carriers and a series of pendent connecting-rods, of a shift ring or plate, a series of radiating lifting-levers, a guide ring or plate for said liftingdevers, and a series of key-levers, substantially as set forth.

l. In a type-Writing machine, the combination of a series of type-carriers arranged in a circle, a series of Vertical connecting-rods arranged in a circle, a shift-ring within the cirele formed by the connecting-i'ods and eonnected to the free ends of said rods, a series of radiating lifting-levers beneath the free ends of said connecting-rods, and a series of key-levers extending to said lifting-levers and adapted to elevate the san1e,substantially as set forth.

Signed at New York, in the county of New York and State of New York, this 15th day of May, A. l). 1889.

GEORGE \V. 'YOS'R Witnesses:

EDWIN C. DUsFNnUnY, Moon Fnnnnn. 

